Research & Knowledge · Rice Knowledge Base
A field reading needs rice knowledge before it can become guidance.
RiceGuard connects measurements with the variety being grown, the crop stage it has reached, the region and the season. That context explains why the same reading can lead to a different interpretation in a different field.
Explore the knowledge layer ↓ One interpretable field record
Variety What is planted?
Place Where is it growing?
Season Which crop calendar applies?
Stage How far has the crop developed?
Result The measurement can be interpreted against the crop that is actually in the field.
- 151
- documented Thai rice varieties
- 17
- attributes per variety
- 07
- documented variety groups
- 02
- seasonal crop calendars
Research & Knowledge
Three pages. Three different questions.
01 Overview Why the research exists and how its parts connect. 02 Field Trial & Validation What is installed, tested and learned.
03 Rice Knowledge Base How variety, stage, region and season shape interpretation.
Scope and status
Three parts of the knowledge layer are at different stages.
01 Documented
Existing reference 151-variety collection Agronomic variety records and documented attributes are available as source material. 02 Designed
Designed system use Context sent to the field Variety, calendar and crop-stage context are designed to guide interpretation at the station and in the farmer view. 03 In development
Long-term objective Open bidirectional knowledge base A free shared resource that also learns from aggregated field evidence remains in development. The variety reference
151 Thai rice varieties, described for agronomy—not marketing.
Each profile records where and how a Thai rice variety is grown.
- 01 Photoperiod-sensitive paddy rice
- 02 Photoperiod-insensitive paddy rice
- 03 Floating + deepwater rice
- 04 Upland rice
- 05 Red rice
- 06 Japonica
- 07 Hybrids
What a variety profile carries
Examples from the 17 recorded attributes
Origin + timing
- Parentage
- Approval date
- Days to maturity
- Photoperiod sensitivity
Plant + grain
- Plant height
- Average yield per rai
- Amylose content
- Grain dimensions
Field fit
- Recommended growing areas
- Resistance
- Susceptibility
- Cultivation considerations
From reference to field guidance
Selecting the variety changes how the readings are understood.
The workflow matches the variety to the plot's soil, climate and season, then interprets readings against the crop's current stage.
- 01 Choose the variety Identify what is planted in the monitored plot.
- 02 Check field fit Relate the profile to soil type, climate and growing season.
- 03 Send the context Make fertiliser schedule, water requirement and pest calendar available to the field system.
- 04 Interpret the reading Read measurements against the selected variety and its current crop stage.
- 05 Explain it clearly Show variety, planting date, current stage and expected harvest in the farmer view.
Why context changes the answer A nitrogen reading does not carry one universal meaning.
A 95-day variety and a photoperiod-sensitive variety follow different biological and seasonal constraints. The system must know which crop it is interpreting.
Measurement
- + Variety
- + Region + season
- + Crop stage
Crop-stage context
Seven stages change what the field information means.
- 01 Land preparation
- 02 Transplanting
- 03 Tillering
- 04 Stem elongation
- 05 Flowering
- 06 Grain filling
- 07 Maturation
What changes across the crop cycle
| Water | Establishment and field water | Root-zone moisture | Reproductive-stage stress | Drainage and harvest readiness |
|---|---|---|---|---|
| Nutrients | Baseline soil condition | Vegetative demand | Stage-specific interpretation | Late-season restraint |
| Pest + disease | Starting field condition | Changing exposure | Flowering and humidity risk | Final crop condition |
| Output | Planting record | Current growth stage | Expected harvest context | Season record |
Regional and seasonal calendars
Thailand does not have one rice calendar.
JanFebMarAprMayJunJulAugSepOctNovDec
Eastern south Documented example
Jan Mid-May → Dec Northern calendar Different regional window
Separate regional schedule Two crop types
Wet-season crop Dry-season crop Calendar principle Advice follows the crop's real position in its region and season—not a generic national date.
Thai field evidence
Detection needs a national pest-and-disease reference.
Image labels are interpreted against Thai field-incidence records.
- 1,214
- field-incidence records
- 50
- provinces represented
- 30+
- pest and disease indicators per record
- 01 Brown planthopper Counts per tiller
- 02 Leaf blast Percentage recorded
- 03 Sheath blight Field-incidence indicator
- 04 Bacterial leaf streak Field-incidence indicator
Open knowledge base · In development
Knowledge moves to the field. Evidence returns from it.
The long-term objective is a free resource connecting rice references with evidence from real plots.
- 01 Rice reference Varieties, calendars and cultivation context
- 02 Field station Selected context supports local interpretation
- 03 Plot evidence Measurements and observations return upstream
- 04 Regional patterns Comparable records can reveal shared conditions
- 05 National picture A seasonal view of how Thai rice is growing
Field evidence feeds back into the rice reference
In development
The open national knowledge base is a stated objective—not a completed public platform.
Public access will be announced only when the resource is operational and approved.
What the user should understand
The knowledge base does not replace the field record. It explains it.
Variety Which rice is planted Defines timing, field fit and cultivation.
Stage Where the crop is now Changes how the same reading is interpreted.
Region + season Which calendar applies Sets the plot's agricultural calendar.
Evidence What the field is showing Builds future regional and national knowledge.